What is a Euro mortise lock and how does it work?

A Euro mortise lock is a precision-engineered locking mechanism installed within a rectangular pocket (mortise) cut into the door edge. It operates using a Euro-profile cylinder keyway, with the latchbolt typically controlled by lever handles and the deadbolt operated by key or thumbturn. Designed to European DIN and EN standards, it features a narrower faceplate than ANSI locks and is compatible with European-style lever handles. The concealed installation provides superior strength and security compared to surface-mounted locks.

CE EN1634 Fire Door Hardware Supplier

What Is a Euro Mortise Lock?

A Euro mortise lock is a concealed locking mechanism that integrates directly into the door's internal structure through a precisely machined rectangular cavity. Manufactured in strict accordance with European DIN and EN dimensional standards, this lock architecture provides superior resistance to physical attack while maintaining a clean, unobstructed door surface.
Unlike surface-mounted cylindrical locks, the mortise design distributes force across the entire lock body, delivering significantly higher structural integrity. The standardized Euro-profile cylinder aperture enables seamless integration with master key hierarchies and advanced access control configurations — making it the preferred specification for architects and security consultants working on commercial-grade projects.

Key Characteristics of Euro Mortise Locks

European Standard Compliance

Manufactured to EN 12209 and DIN 18251, ensuring universal fitment with all compliant European door preparations

Versatile Cylinder Profiles

Euro-profile cylinder aperture supports flexible keying options including master key systems and construction keys

Multiple Security Functions

Deadbolt, latchbolt, emergency egress, privacy, night latch, and passage configurations available in a single platform

Universal Handing Compatibility

Reversible latch mechanism supports both left-hand and right-hand door installations without modification

Premium Material Construction

SUS304 stainless steel forend, strike plates, and bolt components for maximum corrosion resistance and longevity

International Certifications & Quality Standards

Every D&D Hardware Euro mortise lock undergoes rigorous third-party laboratory testing. Our certifications represent independently verified performance guarantees — not marketing claims.

CE Marking

EU Directive Compliant
Full conformity with European Union mandatory requirements for health, safety, and environmental protection in building hardware products.

BS EN 12209

Class: 3X910G3BC20
Highest classification for mechanically operated locks and locking plates. Validated through 200,000+ operational cycles under controlled laboratory conditions.

EN 1634-1 Fire Rating

260 Min Fire Integrity

Structural and operational integrity maintained for over 4 hours under extreme thermal exposure, preventing fire and toxic smoke propagation through the door assembly.

DIN 18251

Dimensional Standard
Precise dimensional conformity guaranteeing universal compatibility with all DIN-standard European door preparations and complementary hardware.

EN 1670

Class 4 | 240h Salt Spray
Complies with EU standards—fully meets EN 1670:2007 specifications, verified through the standard 240-hour neutral salt spray (NSS) test, suitable for marine and coastal environments.

Types of Euro Mortise Locks We Manufacture

D&D Hardware produces a comprehensive range of European mortise locks covering every door function and configuration. Select the right lock type based on your project's security, fire safety, and operational requirements.

Fire Rated Mortise Lock

CE marked mortise locks for metal and wooden doors, tested and certified to BS EN 12209with up to 260 minutes fire rating.

Picture	Model	Lock Type	CE Classification	Backset	Distance
	DDML009	Fire Rated Sash Lock	3X91^b0G3BC20	55mm,60mm,65mm,70mm,80mm	72mm
	DDML010/DDML049	Fire Rated Roller Latch Lock	3C81^b0G3BC00	55mm,60mm	72mm
	DDML011	Fire Rated Latch Lock	3X91^b0G-B020	55mm,60mm,65mm	72mm
	DDML012/DDML050	Fire Rated Bathroom Lock	3X91^b0G-B020	55mm,60mm,65mm	78mm
	DDML013	Fire Rated Deadbolt Lock	3X91^b0G3BC00	55mm,60mm,65mm	72mm
	DDML014	Fire Rated Night Latch Lock	3X91^b0G2BB00	55mm,60mm,65mm	72mm
	DDML026	Fire Rated Sash Lock	3X91^b0G3BC20	45mm,50mm,60mm	85mm

Euro Mortise Lock

Application-specific mortise locks for unique requirements including X-ray shielding rooms in hospitals, long-throw deadlock kits for gate applications, and hook bolt deadlock kits for maximum security installations.

Picture	Model	Lock Type	Backset	Distance
	DDML009-E	Emergency Escape Lock	55mm,60mm	72mm
	DDML015	Classroom Lock	55mm,60mm	72mm
	DDML016/DDML017/ DDML018/DDML019/DDML020	Mortise Lock	40mm,45mm,50mm,55mm,60mm	72mm,85mm
	DDML027	Mortise X-Ray Lock	70mm,80mm	72mm
	DDML039	Sash Lock	45mm,50mm	72mm
	DDML040	Sash Lock	45mm,55mm,60mm,65mm, 70mm,85mm	72mm,85mm
	DDML043	Anti Friction Mortise Lock	55mm,60mm	72mm
	DDML044	Magnetic Mortise Lock	45mm,50mm,55mm,60mm	72mm,85mm
	DDML045	Bit Key Mortise Lock	60mm	72mm
	DDML047	Mute Mortise Lock	55mm,60mm	72mm
	DDML048	Anti Theft Mortise Lock	45mm	85mm

Narrow Stile Lock

Delivers full mechanical security performance within an ultra-compact 20mm to 35mm case width. Available in sash lock, deadbolt, and roller bolt configurations to suit different storefront security requirements.

Picture	Model	Lock Type	Backset	Distance
	DDML021/DDML022/DDML023 /DDML024/DDML025	Narrow Stile Lock	20mm,25mm,30mm,35mm	85mm,92mm
	DDML046	Narrow Frame Mortise Alock	30mm,35mm	85mm,92mm
	DDML051	Security Multipoint Lock	30mm,35mm	85mm,92mm

Hook Bolt Lock

The hook bolt mechanism engages the door frame automatically during the sliding process, providing secure locking for patio doors, barn-style sliders, and commercial sliding partitions. Available in single and double hook bolt configurations with laminated steel construction for maximum security.

Picture	Model	Lock Type	Backset	Function
	DDML031	Sliding Door Hook Lock	50mm	The hook bolt hooks onto the door frame, automatically engaging during the sliding process, and is suitable for translational (sliding) opening and closing.
	DDML031-B	Sliding Door Double Hook Lock	40mm,50mm	Deadbolt in center, operated by key or knob to extend/retract for locking. Fixed guide lugs align lock body with strike when door closes, preventing latch misalignment and improving door stability.
	DDML041	Door Long Throw Deadlock Kit With Mortise Key Cylinders	24.5mm, 28.5mm, 38mm	5-ply laminated steel deadbolt with hardened roller pin. Maximum security. Uses standard mortise key or thumbturn cylinders.
	DDML042	Hook Bolt Deadlock Kit With Mortise Key Cylinder	24.5mm, 28.5mm, 38mm	8-ply laminated steel hook bolt with hardened roller pin in case-hardened center ply. Maximum security for gates and high-risk areas.

Euro Mortise Lock Body

Versatile lock bodies with extended service life, suitable for wooden doors, metal doors, and both interior and exterior applications. Available in latch bolt body, deadbolt body, and roller bolt body configurations. Solid SUS304 casting construction ensures durability in demanding environments. Custom sizes and finishes available for OEM projects.

Picture	Model	Lock Type	Backset	Function
	DDML028	Latch Bolt Lock Body	55mm	Latch bolt can be operated by lever handles on either side
	DDML029	Deadbolt Lock Body	55mm	Deadbolt thrown and retracted from one side or from both sides depending on the type of cylinder installed.
	DDML029-B	Deadbolt Lock Body	55mm	Deadbolt thrown and retracted from one side or from both sides depending on the type of indicator installed.
	DDML030	Roller Bolt Lock Body	55mm	Roller bolt self-locks from either side. Deadbolt thrown/retracted from one or both sides depending on cylinder type. Cylinder operates deadbolt only.
	DDML059	Blade Lock Body	55mm
	DDML060	Dead Lock With Bit Key	55mm

Complete Door Hardware Solutions

Pair your Euro mortise lock with our complementary certified door hardware for a complete, code-compliant door

opening system — all from a single manufacturer.

Euro Mortise Lock + Lever Handle

The Essential Combination for Any Door

Combine our CE EN12209 mortise locks with EN1906 certified stainless steel lever handles for a complete, code-compliant door solution. Available in satin stainless steel, polished chrome, matt black, and PVD gold finishes.

Euro Mortise Lock + Lock Cylinder

Enhanced Security with Flexible Keying

Our Euro mortise locks accept standard Euro-profile cylinders, supporting master key systems, owner keys, and construction keys. Ideal for multi-tenant buildings, hotels, and commercial complexes requiring hierarchical access control.

Euro Mortise Lock + Panic Exit Device

Emergency Egress Compliance

For emergency exit doors, pair our escape function mortise locks with EN1125 certified panic exit devices. This combination ensures safe, rapid egress while maintaining building security — essential for commercial and public buildings.

Euro Mortise Lock + Door Hinge

Complete Fire-Rated Door Assembly

Complete your fire-rated door assembly with our CE certified stainless steel door hinges. Tested to the same EN 1634 fire rating standards, ensuring your entire door system maintains its fire integrity rating as a unified assembly.

Where Are Euro Mortise Locks Used?

Ideal for interior and exterior doors in residential, commercial, and institutional applications where European

standard compliance and fire safety are required.

Commercial Office Buildings

CE EN12209 mortise locks with master key systems provide efficient access management for office corridors, meeting rooms, and common areas.

Hotels & Hospitality

Euro mortise locks paired with EN1906 lever handles deliver superior security and privacy for guest rooms with smooth, quiet operation.

Healthcare Facilities

Privacy and bathroom function locks balance patient privacy with emergency access, meeting healthcare safety standards for clinical environments.

Educational Institutions

Classroom function locks enable lockdown capability while ensuring interior free exit. The durable SUS304 construction withstands heavy daily use throughout the academic year.

Retail & Storefronts

Narrow stile locks designed for slim aluminium profiles provide full security functionality without compromising the clean aesthetic of modern retail glazing facades.

Residential Apartments

Sash locks and deadbolts with Euro cylinders enable convenient master key access for building management while ensuring private, secure individual unit entry.

Why Choose D&D Hardware as Your

Euro Mortise Lock Manufacturer?

Over 18 years of focused expertise in commercial door hardware manufacturing, serving architects, contractors,

and OEM partners across 100+ countries worldwide.

200,000 - Cycle Endurance

Beyond Industry Standards

Each lock has undergone over 200,000 cycles of verification, ensuring outstanding long-term reliability.

100% - System Integration

Complete Door Hardware

Locks, handles, cylinders, hinges, closers, and panic devices — a single-source certified solution for your entire door assembly.

OEM - Custom Solutions

OEM/ODM Manufacturing

Custom dimensions, internal functions, finishes, and branding. From concept to mass production, our engineering team supports your requirements.

10yr - Warranty

Manufacturing Confidence

Comprehensive 10-year warranty reflects total confidence in our precision manufacturing processes and long-term component durability.

Frequently Asked Questions About Euro Mortise Locks

Expert answers to common technical and specification questions about European mortise locks and their applications.

What is a Euro mortise lock and how does it work?

A Euro mortise lock is a precision-engineered locking mechanism installed within a rectangular pocket (mortise) cut into the door edge. It operates using a Euro-profile cylinder keyway, with the latchbolt typically controlled by lever handles and the deadbolt operated by key or thumbturn. Designed to European DIN and EN standards, it features a narrower faceplate than ANSI locks and is compatible with European-style lever handles. The concealed installation provides superior strength and security compared to surface-mounted locks.

What certifications do D&D Hardware Euro mortise locks carry?

D&D Hardware Euro mortise locks are tested and certified to BS EN 12209 (classification: 3X910G3BC20) and EN 1634 with a fire rating of up to 260 minutes. They carry full CE marking ensuring compliance with European health, safety, and environmental standards. All products conform to DIN 18251 dimensional standards, guaranteeing universal compatibility with standard European door preparations. Additionally, our locks undergo 240-hour salt spray corrosion testing and 2,500,000 cycle endurance testing.

What is the difference between a Euro mortise lock and an ANSI mortise lock?

Euro mortise locks follow DIN/EN standards with narrower faceplates (20–25mm), Euro-profile cylinder apertures, and backset options of 45-80mm. ANSI locks follow American A156.13 standards with wider bodies (25–32mm faceplates), mortise cylinders, and typically 70mm (2-3/4") backsets. Euro locks are paired with EN 1906 lever handles and offer a more compact form factor, while ANSI locks use BHMA-rated hardware. Fire testing follows EN 1634 for Euro (up to 260 min) versus UL 10C for ANSI.

Can Euro mortise locks be used on fire-rated doors?

Yes. D&D Hardware Euro mortise locks are independently tested and certified to EN 1634-1 fire resistance standards, achieving up to 260 minutes (over 4 hours) of fire integrity. They are suitable for installation in both metal (steel) and wooden fire-rated door assemblies. The SUS304 stainless steel construction ensures consistent performance regardless of door leaf material, and DIN 18251 compliance guarantees proper fitment in standard fire door preparations.

What types of Euro mortise locks does D&D Hardware offer?

D&D Hardware manufactures a comprehensive range including: CE EN12209 certified sash locks (entry function), emergency escape locks, roller latch locks, passage latch locks, bathroom/privacy locks, deadbolt locks (storeroom), night latch locks (auto-deadlocking), classroom function locks, narrow stile locks (30mm/35mm for aluminium profiles), sliding door hook locks, mortise lock bodies, X-ray protection locks, and specialty long-throw and hook bolt deadlock kits. All are available in SUS304 stainless steel with multiple backset options.

What materials are used in D&D Hardware Euro mortise locks?

All critical components — forend plates, strike plates, latchbolts, and deadbolts — are manufactured from SUS304 austenitic stainless steel, providing exceptional corrosion resistance verified through 240-hour salt spray testing (EN 1670). Lock cases feature zinc-plated steel for additional environmental protection. Narrow stile variants are available in both SUS304 stainless steel and brass options. Specialty deadlock kits use 5-ply or 8-ply laminated steel with hardened roller pins for maximum attack resistance.

How do I choose the right Euro mortise lock for my project?

Consider these factors: (1) Door type — wooden, metal, or aluminium; (2) Door thickness and profile width; (3) Required function — entry/sash, privacy, emergency exit, passage, storeroom, or classroom; (4) Fire rating requirements per building code; (5) Backset size — 55mm, 60mm, or 65mm; (6) Cylinder type — single, double, or thumbturn; (7) For narrow-profile doors, choose our 30mm/35mm narrow stile range; (8) For sliding doors, select hook bolt locks. Contact sales@danddhardware.com for personalized technical recommendations based on your specific project requirements.

Ready to Source Euro Mortise Locks

for Your Commercial Project?

Connect with our technical team for product specifications, sample requests, OEM quotations, or partnership discussions.

Request Free Quote

Browse Full Product Catalog

PHONE

+86-139 2903 7292

EMAIL

sales@danddhardware.com

LOCATION

Jiangmen, Guangdong, China